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Selenenylsulfide covalent-directed chemistry for the detection of sulfhydryl groups using a diselenide fluorescent probe† 利用二硒化物荧光探针检测巯基的硒基硫化物共价导向化学方法†。
IF 3.9 3区 化学
RSC Advances Pub Date : 2024-11-18 DOI: 10.1039/D4RA05923A
Chunqiu Ma, Jichao Xu, Xiaolu Wang, Xuewen Wang, Lei Zhang and Su Jing
{"title":"Selenenylsulfide covalent-directed chemistry for the detection of sulfhydryl groups using a diselenide fluorescent probe†","authors":"Chunqiu Ma, Jichao Xu, Xiaolu Wang, Xuewen Wang, Lei Zhang and Su Jing","doi":"10.1039/D4RA05923A","DOIUrl":"https://doi.org/10.1039/D4RA05923A","url":null,"abstract":"<p >We report the development of a diglycosyldiselenide-based fluorescent probe for the rapid detection of sulfhydryl-containing biomolecules. The probe facilitates a chemoselective coupling reaction with sulfhydryl groups in aqueous buffer under ambient conditions, resulting in the formation of homogeneous Se–S conjugates within one hour. Using glutathione, a sulfhydryl-containing biomolecule, as a proof of concept, the probe achieved a detection limit of 0.75 μM based on the 3<em>σ</em> criterion. The method was further extended to the fluorescent labeling of cysteine-containing peptides, proteins, and living bacterial cells, showcasing the utility of Se–S covalent-directed chemistry as an analytical tool. This approach underscores the considerable potential of diglycosyldiselenide-based fluorescent probes for broader applications in biochemical research.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 49","pages":" 36754-36762"},"PeriodicalIF":3.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra05923a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transport properties of B-site codoped CaHfO3 proton conductors with octahedral distortion 具有八面体畸变的 B 位共掺 CaHfO3 质子导体的传输特性
IF 3.9 3区 化学
RSC Advances Pub Date : 2024-11-18 DOI: 10.1039/D4RA06213B
Wenlong Huang, Mingze Lv, Ying Li, Yushi Ding, Jiayao Lu, Chunsheng Zhuang, Pengfei Yue and Wei Zhang
{"title":"Transport properties of B-site codoped CaHfO3 proton conductors with octahedral distortion","authors":"Wenlong Huang, Mingze Lv, Ying Li, Yushi Ding, Jiayao Lu, Chunsheng Zhuang, Pengfei Yue and Wei Zhang","doi":"10.1039/D4RA06213B","DOIUrl":"https://doi.org/10.1039/D4RA06213B","url":null,"abstract":"<p >Perovskite-type solid electrolytes exhibit a diverse range of conductive properties due to the competition and coupling of multiple degrees of freedom. In perovskite structures, B-site and X-site ions form topological octahedral sublattices, which are instrumental in regulating transport properties for various charge carriers. However, research focused on the relationship between octahedral distortion and conductive properties in perovskite-type proton conductors remains limited. In this study, dopants such as Ge, Sn, Pr, and Ce were selected to modify the degree of BO<small><sub>6</sub></small> octahedral distortion in CaHf<small><sub>0.9</sub></small>Sc<small><sub>0.1</sub></small>O<small><sub>3−<em>δ</em></sub></small>. The relationships between conductivity, transport number, mobility, and the distortion degree were systematically investigated. The data indicate that both proton and oxygen ion mobilities initially increase with the octahedral distortion angle and then decrease, and CaHf<small><sub>0.8</sub></small>Sn<small><sub>0.1</sub></small>Sc<small><sub>0.1</sub></small>O<small><sub>3−<em>δ</em></sub></small> with an octahedral distortion angle of 15.6°, exhibited the highest ionic mobilities and conductivities. The BO<small><sub>6</sub></small> octahedral distortion appears to limit oxide ion conduction while enhancing the proton transport number. However, excessive doping generates additional oxygen vacancies, which adversely affect proton conduction. Under the combined influence of these factors, CaHf<small><sub>0.8</sub></small>Ce<small><sub>0.1</sub></small>Sc<small><sub>0.1</sub></small>O<small><sub>3−<em>δ</em></sub></small> achieved the highest proton transport number of 0.503 at 800 °C. Overall, this work provides insights into the relationship between octahedral distortion and conductive properties, suggesting that co-doping is a feasible approach for further regulating carrier mobility properties.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 49","pages":" 36782-36793"},"PeriodicalIF":3.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra06213b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of design and device parameters for lead-free Sr3PBr3/Sr3NCl3 duel-layer perovskite photovoltaic device technology 评估无铅 Sr3PBr3/Sr3NCl3 双层过氧化物光伏器件技术的设计和器件参数
IF 3.9 3区 化学
RSC Advances Pub Date : 2024-11-18 DOI: 10.1039/D4RA07912D
Md. Shamim Reza, Avijit Ghosh, Nidhal Drissi, Hmoud Al-Dmour, Ripan Kumar Prodhan, Md Majharul Islam, Shirin Begum, Md. Selim Reza and Sabina Sultana
{"title":"Evaluation of design and device parameters for lead-free Sr3PBr3/Sr3NCl3 duel-layer perovskite photovoltaic device technology","authors":"Md. Shamim Reza, Avijit Ghosh, Nidhal Drissi, Hmoud Al-Dmour, Ripan Kumar Prodhan, Md Majharul Islam, Shirin Begum, Md. Selim Reza and Sabina Sultana","doi":"10.1039/D4RA07912D","DOIUrl":"https://doi.org/10.1039/D4RA07912D","url":null,"abstract":"<p >The study looks into how Sr<small><sub>3</sub></small>PBr<small><sub>3</sub></small> and Sr<small><sub>3</sub></small>NCl<small><sub>3</sub></small> double perovskite materials can be used as absorbers in perovskite solar cells (PSCs). Computational Sr<small><sub>3</sub></small>PBr<small><sub>3</sub></small> and Sr<small><sub>3</sub></small>NCl<small><sub>3</sub></small> simulations were employed to assess the performance of each absorber together with electron transport layers (ETL), with a particular emphasis on optimizing ETL thickness to improve charge transport and synchronize current outputs. The simulations yielded valuable insights into the electronic and optical characteristics of the individual absorbers. Subsequently, a tandem simulation was performed to adjust each layer's thickness, ensuring that both devices' current outputs were aligned for maximum system efficiency. The findings revealed that the tandem configuration of Sr<small><sub>3</sub></small>PBr<small><sub>3</sub></small> and Sr<small><sub>3</sub></small>NCl<small><sub>3</sub></small> surpassed the performance of the individual absorber setups, attributed to the optimized ETL thicknesses that enhanced charge transport and facilitated effective current matching. This study makes a significant contribution to the design and optimization of tandem PSCs utilizing Sr<small><sub>3</sub></small>PBr<small><sub>3</sub></small> and Sr<small><sub>3</sub></small>NCl<small><sub>3</sub></small> absorbers, paving the way for improved overall device efficiency. We investigated three device configurations to find the optimum structure. FTO/SnS<small><sub>2</sub></small>/Sr<small><sub>3</sub></small>PBr<small><sub>3</sub></small>/Ni, FTO/SnS<small><sub>2</sub></small>/Sr<small><sub>3</sub></small>NCl<small><sub>3</sub></small>/Ni, and FTO/SnS<small><sub>2</sub></small>/Sr<small><sub>3</sub></small>PBr<small><sub>3</sub></small>/Sr<small><sub>3</sub></small>NCl<small><sub>3</sub></small>/Ni are considered as Device-I, II, and III. In Device-I, the execution parameters are power conversion efficiency (PCE) of 24.26%, an open-circuit voltage (<em>V</em><small><sub>OC</sub></small>) of 1.23 V, a short-circuit current density (<em>J</em><small><sub>SC</sub></small>) of 24.65 mA cm<small><sup>−2</sup></small>, and a fill factor (FF) of 87.42%. For Device-II, PCE, FF, <em>V</em><small><sub>OC</sub></small>, and <em>J</em><small><sub>SC</sub></small> are correspondingly 20.35%, 87.91%, 1.28 V, and 18.07 mA cm<small><sup>−2</sup></small>. The further refined tandem configuration achieved a PCE of 30.32%, with a <em>V</em><small><sub>OC</sub></small> of 1.27 V, an FF of 90.14%, and a <em>J</em><small><sub>SC</sub></small> of 26.44 mA cm<small><sup>−2</sup></small>, demonstrating the potential of this methodology in enhancing PSC performance.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 49","pages":" 36675-36697"},"PeriodicalIF":3.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra07912d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Silicotungstate@ZIF-67 as an effective catalyst for an extraction and oxidative desulfurization system 硅钨酸盐@ZIF-67 作为萃取和氧化脱硫系统的有效催化剂
IF 3.9 3区 化学
RSC Advances Pub Date : 2024-11-18 DOI: 10.1039/D4RA06736C
Lijun Xu, Qian Tong and Bing Hu
{"title":"Silicotungstate@ZIF-67 as an effective catalyst for an extraction and oxidative desulfurization system","authors":"Lijun Xu, Qian Tong and Bing Hu","doi":"10.1039/D4RA06736C","DOIUrl":"https://doi.org/10.1039/D4RA06736C","url":null,"abstract":"<p >Through a simple room-temperature process, different amounts of Keggin-type quaternary ammonium silicotungstate were successfully encapsulated into the metal–organic framework (MOF) material ZIF-67. The catalysts were characterized using Fourier transform infrared (FT-IR) spectroscopy, X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and BET analysis. An extraction and catalytic oxidation desulfurization system was studied using H<small><sub>2</sub></small>O<small><sub>2</sub></small> as an oxidant and a deep eutectic solvent (DES) as an extractant. Using the 43.06%-SiW<small><sub>12</sub></small>@ZIF-67 composite under optimal reaction conditions, DBT present in a model oil could be deeply and effectively removed. The catalyst was reused 6 times, and the desulfurization rate still exceeded 90%. Finally, a possible desulfurization mechanism is proposed.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 49","pages":" 36622-36632"},"PeriodicalIF":3.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra06736c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluating the combined estrogenic effects of plant growth regulators via electrochemical and E-Screen methods† 通过电化学和 E-Screen 方法评估植物生长调节剂的综合雌激素效应†。
IF 3.9 3区 化学
RSC Advances Pub Date : 2024-11-18 DOI: 10.1039/D4RA06838F
Xijie Wang, Zijia Zhao, Shulan Qi, Zan Li, Zhong Wang, Shi Zhou, Jiwen Cui, Jinlian Li and Dongmei Wu
{"title":"Evaluating the combined estrogenic effects of plant growth regulators via electrochemical and E-Screen methods†","authors":"Xijie Wang, Zijia Zhao, Shulan Qi, Zan Li, Zhong Wang, Shi Zhou, Jiwen Cui, Jinlian Li and Dongmei Wu","doi":"10.1039/D4RA06838F","DOIUrl":"https://doi.org/10.1039/D4RA06838F","url":null,"abstract":"<p >The study shows that plant growth regulators (PGRs) have estrogenic effects, which may disrupt the normal physiological functions of endogenous estrogen in organisms. This study used electrochemical methods to investigate the electrochemical behavior and estrogenic effects of PGRs gibberellic acid (GA<small><sub>3</sub></small>), ethylene (ETH), and naphthalene acetic acid (NAA) on estrogen-free human breast cancer cells (MCF-7) cells when exposed individually or in combination. The results indicate that GA<small><sub>3</sub></small>, ETH, and NAA, whether used alone or in combination, exhibit estrogenic effects on MCF-7 cells. The accuracy of the electrochemical method was validated against the E-Screen method, with consistent results between the two methods. Analysis of the combined estrogenic effects of PGRs detected by electrochemical and E-Screen methods revealed antagonistic effects for GA<small><sub>3</sub></small>/ETH, synergistic effects for GA<small><sub>3</sub></small>/NAA, additive effects for NAA/ETH, and synergistic effects for GA<small><sub>3</sub></small>/ETH/NAA. The combined estrogenic effects of PGRs at environmental actual concentration ratios detected by the electrochemical method were consistent with the results of the E-Screen method. This study successfully established a simple, fast, sensitive, and low-cost electrochemical detection method for the combined estrogenic effects of PGRs, providing a new approach for detecting such effects.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 49","pages":" 36745-36753"},"PeriodicalIF":3.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra06838f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical analysis of anticancer and antibiotic drugs in water and biological specimens 水和生物样本中抗癌药物和抗生素的电化学分析
IF 3.9 3区 化学
RSC Advances Pub Date : 2024-11-18 DOI: 10.1039/D4RA05685J
Ayesha Qureshi, Afzal Shah, Faiza Jan Iftikhar, Abdul Haleem and Muhammad Abid Zia
{"title":"Electrochemical analysis of anticancer and antibiotic drugs in water and biological specimens","authors":"Ayesha Qureshi, Afzal Shah, Faiza Jan Iftikhar, Abdul Haleem and Muhammad Abid Zia","doi":"10.1039/D4RA05685J","DOIUrl":"https://doi.org/10.1039/D4RA05685J","url":null,"abstract":"<p >The increasing prevalence of pharmaceuticals in water and complex matrices necessitates accurate measurement and monitoring of their environmental contamination levels. This is crucial not only for environmental conservation but also for comprehending the intricate mechanisms involved and developing more effective treatment approaches. In this context, electrochemical techniques show significant potential for the detection of pharmaceuticals across various matrices. Specifically, voltammetry is advantageous due to its rapid, straightforward, and cost-effective nature, allowing for the simultaneous analysis of multiple anticancer and antibiotic drugs. By utilizing nanomaterial-modified electrochemical sensors, the sensitivity and selectivity of detection methods can be significantly improved. The small size and customizable properties of nanomaterials enable these sensors to identify trace amounts of drugs in diverse samples. However, challenges persist in achieving reliable and accurate electrochemical monitoring of drugs in water and biological samples. Biofluids such as saliva, urine, and blood/serum, along with environmental samples from lakes and rivers, often contain numerous interfering substances that can diminish analyte signals. This review examines electrochemical methods and their potential applications for detecting pharmaceuticals and their metabolites, while also addressing the mechanisms of action and harmful effects of these drugs on both ecosystems and human health. Recent developments in electrochemical sensors utilizing nanomaterials for the detection of health-threatening pharmaceutical contaminants are examined, providing important insights into their underlying mechanisms. The emphasis is placed on the detection of anticancer agents and antibiotics, which relies on the electrocatalytic properties of the sensor materials. Additionally, discussions on density functional theory studies are included, along with an exploration of the emerging challenges and future directions in this area, aimed at enhancing readers' comprehension of the field and underscoring the necessary actions for a sustainable future.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 49","pages":" 36633-36655"},"PeriodicalIF":3.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra05685j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Targeting reactive oxygen species to ameliorate T cell-mediated inflammation in dry eye syndrome: a novel therapeutic approach† 针对活性氧改善干眼症中 T 细胞介导的炎症:一种新的治疗方法†。
IF 3.9 3区 化学
RSC Advances Pub Date : 2024-11-18 DOI: 10.1039/D4RA06759B
Yi Zheng, Haochen Liu, Bingkun Lu, Muchen Dong and Xinhai Wang
{"title":"Targeting reactive oxygen species to ameliorate T cell-mediated inflammation in dry eye syndrome: a novel therapeutic approach†","authors":"Yi Zheng, Haochen Liu, Bingkun Lu, Muchen Dong and Xinhai Wang","doi":"10.1039/D4RA06759B","DOIUrl":"https://doi.org/10.1039/D4RA06759B","url":null,"abstract":"<p >Dry eye syndrome (DES) is a prevalent condition linked to oxidative stress from Orthokeratology (OK) lens use, causing significant discomfort and impacting quality of life. Herein, this study investigates the role of Reactive Oxygen Species (ROS) in modulating T cell responses, particularly Th17 cells and IL-17A production, which are central to DES pathogenesis. We propose a novel therapeutic strategy using ceria nanoparticles (CeNPs) for ocular ROS clearance, hypothesized to attenuate Th17 activation and IL-1β and IL-17A production, thereby reducing DES symptoms. We developed a hybrid coating for OK lenses using Schiff base reactions to link tannic acid with CeNPs, aiming to neutralize ROS and mitigate inflammation. This approach could offer a transformative treatment for DES, especially among OK lens users. In comparison to existing therapies, our approach demonstrated a 70% reduction in corneal inflammation markers and a 2.5-fold increase in tear secretion, offering a transformative treatment for DES, especially among OK lens users.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 49","pages":" 36804-36815"},"PeriodicalIF":3.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra06759b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Direct dimethyl carbonate synthesis from CO2 and methanol over a flower-like CeO2 catalyst with 2-cyanopyridine as a dehydrating agent in continuous packed-bed reactor 在连续填料床反应器中,以 2-氰基吡啶为脱水剂,在花状 CeO2 催化剂上从二氧化碳和甲醇直接合成碳酸二甲酯
IF 3.9 3区 化学
RSC Advances Pub Date : 2024-11-18 DOI: 10.1039/D4RA06187J
Issara Sereewatthanawut, Notsawan Swadchaipong, Vut Tongnan, Chalempol Khajonvittayakul, Panupan Maneesard, Rossarin Ampairojanawong, Ammarika Makdee, Matthew Hartley, Kang Li and Unalome Wetwatana Hartley
{"title":"Direct dimethyl carbonate synthesis from CO2 and methanol over a flower-like CeO2 catalyst with 2-cyanopyridine as a dehydrating agent in continuous packed-bed reactor","authors":"Issara Sereewatthanawut, Notsawan Swadchaipong, Vut Tongnan, Chalempol Khajonvittayakul, Panupan Maneesard, Rossarin Ampairojanawong, Ammarika Makdee, Matthew Hartley, Kang Li and Unalome Wetwatana Hartley","doi":"10.1039/D4RA06187J","DOIUrl":"https://doi.org/10.1039/D4RA06187J","url":null,"abstract":"<p >A flower-like CeO<small><sub>2</sub></small> catalyst was successfully synthesized using an acrylamide graft copolymerized on glucose under hydrothermal conditions and used for the direct synthesis of dimethyl carbonate (DMC) from CO<small><sub>2</sub></small> and CH<small><sub>3</sub></small>OH in a packed-bed reactor with 2-cyanopyridine as a dehydrating agent. The synthesized flower-like CeO<small><sub>2</sub></small> exhibited both basicity and acidity properties with values of 300 μmol g<small><sup>−1</sup></small> and 80 μmol g<small><sup>−1</sup></small>, respectively, according to CO<small><sub>2</sub></small>-TPD and NH<small><sub>3</sub></small>-TPD results. The effect of reaction parameters such as reaction temperature, feed ratio, catalyst quantity, and operating pressure on the DMC production over the flower-like CeO<small><sub>2</sub></small> catalyst was investigated. The optimum conditions were found to be a temperature of 120 °C, catalyst weight of 1.0 g, CH<small><sub>3</sub></small>OH : CO<small><sub>2</sub></small> ratio of 1 : 1, and pressure of 30 bar, which provided the highest CH<small><sub>3</sub></small>OH conversion, DMC selectivity, and DMC yield of 86.6%, 99.3%, and 86.0%, respectively. Furthermore, no changes were observed in the structure, morphology, and particle size of the flower-like CeO<small><sub>2</sub></small> catalyst after the DMC synthesis reaction, indicating that the synthesized catalyst was resistant to the reaction test under such optimum reaction conditions.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 49","pages":" 36771-36781"},"PeriodicalIF":3.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra06187j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Kondo effect in superparamagnetic 30% Co–Ni/NiO nanocomposites: detailed transport and magnetic investigations 超顺磁性 30% Co-Ni/NiO 纳米复合材料中的 Kondo 效应:详细的传输和磁性研究
IF 3.9 3区 化学
RSC Advances Pub Date : 2024-11-18 DOI: 10.1039/D4RA06638C
Shilpa D. Kamble, Charudipa D. Kamble, Umesh P. Gawai, Devendra Kumar, Padmakar G. Chavan and Sanjay K. Gurav
{"title":"The Kondo effect in superparamagnetic 30% Co–Ni/NiO nanocomposites: detailed transport and magnetic investigations","authors":"Shilpa D. Kamble, Charudipa D. Kamble, Umesh P. Gawai, Devendra Kumar, Padmakar G. Chavan and Sanjay K. Gurav","doi":"10.1039/D4RA06638C","DOIUrl":"https://doi.org/10.1039/D4RA06638C","url":null,"abstract":"<p >Nanocomposites of 20% and 30% Co-doped Ni/NiO were synthesized using a microwave-assisted sol–gel auto-combustion method. The 30% Co-doped Ni/NiO nanocomposite exhibited negative magnetoresistance (M-R) at various temperatures, including 2 K, 10 K, 80 K, 100 K, and 250 K. This behavior is interpreted as indicative of a Kondo-like scattering effect. The resistivity <em>ρ</em>(<em>T</em>) upturn observed at low temperatures in the 30% Co-doped Ni/NiO nanocomposite can be accurately described by a power series equation combined with a Kondo term. Furthermore, this sample demonstrated a metal–insulator transition around the Kondo temperature <em>T</em><small><sub>K</sub></small> ≈ 29.8(5) K, with noticeable resistivity changes at magnetic fields of 0 T, 1 T, 5 T, and 8 T. Additionally, a hump in resistivity at approximately 212 K, 170 K, 243 K, 251 K, and 209 K for magnetic fields of 0 T, 0.05 T, 1 T, 5 T, and 8 T, respectively, is attributed to the charge ordering of Co<small><sup>3+</sup></small> and Co<small><sup>4+</sup></small> ions within the Ni/NiO lattice, contributing to a further metal–insulator transition.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 49","pages":" 36667-36674"},"PeriodicalIF":3.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra06638c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simple preparation of PVDF composite flexible film with transparent, self-cleaning and radiative cooling properties† 简单制备具有透明、自清洁和辐射冷却特性的 PVDF 复合柔性薄膜†。
IF 3.9 3区 化学
RSC Advances Pub Date : 2024-11-18 DOI: 10.1039/D4RA06819J
Junxia Mao, Xinyu Tan, Weiwei Hu, Chao Shi, Fan Zhou and Alkiviadis Tsamis
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